Question

Choose the correct answer from the alternatives given.
Which of the following statements is not true about the cyclic electron pathway?

• A. Produces ATP
• B. Involves photosystem-l
• C. Produces NADPH
• D. Believed to be the first of the two electron transport pathways to have developed

Answer 1

Answer: (C)

Produces NADPH

Cyclic photophosphorylation was the first elaborate photosynthetic system to evolve. Cyclic photophosphorylation is still dominant in bacterial systems today. The photoexcited electrons take an alternative path called cyclic electron flow, which uses photosystem I (P700) but not photosystem II (P680). This process produces no NADPH and no O2, but it does make ATP. This is called cyclic photophosphorylation.

So, the correct option is 'Produces NADPH'.